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Issue 36, 2014
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Exfoliation of one-dimensional TiO5 chain in K2TiO3

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Potassium titanate, K2TiO3, with a chain structure of TiO5 polyhedra was exfoliated in an aqueous nitric acid solution of pH ≤ 1 and Tyndall scattering due to the colloid formed by the exfoliation was observed. The colloidal particle size measured by dynamic light scattering was approximately 300 nm. The stripe pattern observed by transmission electron microscopy for the aggregated grains after their drying suggested that the TiO5 chains were exfoliated in acid solution. X-ray absorption showed that the coordination polyhedron around Ti4+ changed from a square pyramid in K2TiO3 powder to a distorted octahedron formed with the additional hydronium ions in the acidic solution.

Graphical abstract: Exfoliation of one-dimensional TiO5 chain in K2TiO3

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The article was received on 24 Jun 2014, accepted on 28 Jul 2014 and first published on 28 Jul 2014

Article type: Paper
DOI: 10.1039/C4DT01891E
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Citation: Dalton Trans., 2014,43, 13751-13755
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    Exfoliation of one-dimensional TiO5 chain in K2TiO3

    Y. Masubuchi, R. Miyazaki, H. Kikuchi, T. Motohashi and S. Kikkawa, Dalton Trans., 2014, 43, 13751
    DOI: 10.1039/C4DT01891E

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